Principal Spectrum Preferred and Capital Securities Income Fund Class R-3 PNARX Strategy

The investment seeks to provide current income. The fund invests at least 80% of its net assets, plus any borrowing for investment purposes, in preferred securities and capital securities. Preferred securities typically include preferred stock and various types of junior subordinated debt and trust preferred securities. It also invests up to 55% of its assets in below-investment-grade preferred securities and bonds (sometimes called “high yield bonds” or “junk bonds”), which are rated at the time of purchase Ba1 or lower by Moody’s and BB+ or lower by S&P Global.